AD5689RWBCPZ-RL7

Overview

The AD5689RWBCPZ-RL7 is a dual, 16-bit buffered voltage output digital-to-analog converter (DAC) from the nanoDAC+ family. It features an internal 2.5 V reference with a typical temperature coefficient of 2 ppm/°C and supports a user-selectable gain of 1 or 2 via the GAIN pin. The device operates on a single 2.7 V to 5.5 V supply and includes a versatile 50 MHz SPI interface with readback capability. Key specifications include ±2 LSB maximum relative accuracy (INL), 5 µs settling time, and low power consumption of 3.3 mW at 3 V. It is housed in a compact 3 mm × 3 mm 16-lead LFCSP package.

Feature Summary

• Dual 16-bit resolution with ±2 LSB maximum INL and ±1 LSB DNL
• Internal 2.5 V reference with 2 ppm/°C typical drift
• User-selectable gain (×1 or ×2) for flexible output ranges
• 50 MHz SPI interface with daisy-chain and readback support

Applications

• Optical transceivers
• Base station power amplifiers
• Process control (PLC I/O cards)
• Industrial automation
• Data acquisition systems

Procurement Notes

Verify the specific suffix 'WB' against official documentation to confirm grade and packaging details. Ensure compatibility with the required logic voltage levels (1.62 V to 5.5 V) and supply range (2.7 V to 5.5 V). Confirm that the 16-lead LFCSP package meets the thermal and mechanical requirements of the target PCB layout.

Selection Notes

Select this component when high relative accuracy and low drift are critical for dual-channel applications. The internal reference eliminates the need for external components, simplifying the design. Consider the GAIN pin configuration to determine if the 0 V to 2.5 V or 0 V to 5 V output span better suits the downstream circuitry requirements.

Part Context

This part belongs to the AD5689R/AD5687R nanoDAC+ family, which offers low power and small form factors. The AD5689R variant specifically provides 16-bit resolution, distinguishing it from the 12-bit AD5687R. Both share similar interfaces and package options but differ in resolution and accuracy specifications.

Replacement Considerations

For direct replacements within the same family, consider the AD5689RACPZ-RL7 or AD5689RBCPZ-RL7, ensuring the specific grade (A or B) matches the application's accuracy needs. Verify that any substitute maintains the 16-bit resolution and LFCSP-16 package.